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|
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Marvell 88E6xxx Switch Global 2 Registers support
*
* Copyright (c) 2008 Marvell Semiconductor
*
* Copyright (c) 2016-2017 Savoir-faire Linux Inc.
* Vivien Didelot <vivien.didelot@savoirfairelinux.com>
*/
#include <linux/bitfield.h>
#include <linux/interrupt.h>
#include <linux/irqdomain.h>
#include "chip.h"
#include "global1.h" /* for MV88E6XXX_G1_STS_IRQ_DEVICE */
#include "global2.h"
int mv88e6xxx_g2_read(struct mv88e6xxx_chip *chip, int reg, u16 *val)
{
return mv88e6xxx_read(chip, chip->info->global2_addr, reg, val);
}
int mv88e6xxx_g2_write(struct mv88e6xxx_chip *chip, int reg, u16 val)
{
return mv88e6xxx_write(chip, chip->info->global2_addr, reg, val);
}
int mv88e6xxx_g2_wait_bit(struct mv88e6xxx_chip *chip, int reg, int
bit, int val)
{
return mv88e6xxx_wait_bit(chip, chip->info->global2_addr, reg,
bit, val);
}
/* Offset 0x00: Interrupt Source Register */
static int mv88e6xxx_g2_int_source(struct mv88e6xxx_chip *chip, u16 *src)
{
/* Read (and clear most of) the Interrupt Source bits */
return mv88e6xxx_g2_read(chip, MV88E6XXX_G2_INT_SRC, src);
}
/* Offset 0x01: Interrupt Mask Register */
static int mv88e6xxx_g2_int_mask(struct mv88e6xxx_chip *chip, u16 mask)
{
return mv88e6xxx_g2_write(chip, MV88E6XXX_G2_INT_MASK, mask);
}
/* Offset 0x02: Management Enable 2x */
static int mv88e6xxx_g2_mgmt_enable_2x(struct mv88e6xxx_chip *chip, u16 en2x)
{
return mv88e6xxx_g2_write(chip, MV88E6XXX_G2_MGMT_EN_2X, en2x);
}
/* Offset 0x03: Management Enable 0x */
static int mv88e6xxx_g2_mgmt_enable_0x(struct mv88e6xxx_chip *chip, u16 en0x)
{
return mv88e6xxx_g2_write(chip, MV88E6XXX_G2_MGMT_EN_0X, en0x);
}
/* Offset 0x05: Switch Management Register */
static int mv88e6xxx_g2_switch_mgmt_rsvd2cpu(struct mv88e6xxx_chip *chip,
bool enable)
{
u16 val;
int err;
err = mv88e6xxx_g2_read(chip, MV88E6XXX_G2_SWITCH_MGMT, &val);
if (err)
return err;
if (enable)
val |= MV88E6XXX_G2_SWITCH_MGMT_RSVD2CPU;
else
val &= ~MV88E6XXX_G2_SWITCH_MGMT_RSVD2CPU;
return mv88e6xxx_g2_write(chip, MV88E6XXX_G2_SWITCH_MGMT, val);
}
int mv88e6185_g2_mgmt_rsvd2cpu(struct mv88e6xxx_chip *chip)
{
int err;
/* Consider the frames with reserved multicast destination
* addresses matching 01:80:c2:00:00:0x as MGMT.
*/
err = mv88e6xxx_g2_mgmt_enable_0x(chip, 0xffff);
if (err)
return err;
return mv88e6xxx_g2_switch_mgmt_rsvd2cpu(chip, true);
}
int mv88e6352_g2_mgmt_rsvd2cpu(struct mv88e6xxx_chip *chip)
{
int err;
/* Consider the frames with reserved multicast destination
* addresses matching 01:80:c2:00:00:2x as MGMT.
*/
err = mv88e6xxx_g2_mgmt_enable_2x(chip, 0xffff);
if (err)
return err;
return mv88e6185_g2_mgmt_rsvd2cpu(chip);
}
/* Offset 0x06: Device Mapping Table register */
int mv88e6xxx_g2_device_mapping_write(struct mv88e6xxx_chip *chip, int target,
int port)
{
u16 val = (target << 8) | (port & 0x1f);
/* Modern chips use 5 bits to define a device mapping port,
* but bit 4 is reserved on older chips, so it is safe to use.
*/
return mv88e6xxx_g2_write(chip, MV88E6XXX_G2_DEVICE_MAPPING,
MV88E6XXX_G2_DEVICE_MAPPING_UPDATE | val);
}
/* Offset 0x07: Trunk Mask Table register */
int mv88e6xxx_g2_trunk_mask_write(struct mv88e6xxx_chip *chip, int num,
bool hash, u16 mask)
{
u16 val = (num << 12) | (mask & mv88e6xxx_port_mask(chip));
if (hash)
val |= MV88E6XXX_G2_TRUNK_MASK_HASH;
return mv88e6xxx_g2_write(chip, MV88E6XXX_G2_TRUNK_MASK,
MV88E6XXX_G2_TRUNK_MASK_UPDATE | val);
}
/* Offset 0x08: Trunk Mapping Table register */
int mv88e6xxx_g2_trunk_mapping_write(struct mv88e6xxx_chip *chip, int id,
u16 map)
{
const u16 port_mask = BIT(mv88e6xxx_num_ports(chip)) - 1;
u16 val = (id << 11) | (map & port_mask);
return mv88e6xxx_g2_write(chip, MV88E6XXX_G2_TRUNK_MAPPING,
MV88E6XXX_G2_TRUNK_MAPPING_UPDATE | val);
}
int mv88e6xxx_g2_trunk_clear(struct mv88e6xxx_chip *chip)
{
const u16 port_mask = BIT(mv88e6xxx_num_ports(chip)) - 1;
int i, err;
/* Clear all eight possible Trunk Mask vectors */
for (i = 0; i < 8; ++i) {
err = mv88e6xxx_g2_trunk_mask_write(chip, i, false, port_mask);
if (err)
return err;
}
/* Clear all sixteen possible Trunk ID routing vectors */
for (i = 0; i < 16; ++i) {
err = mv88e6xxx_g2_trunk_mapping_write(chip, i, 0);
if (err)
return err;
}
return 0;
}
/* Offset 0x09: Ingress Rate Command register
* Offset 0x0A: Ingress Rate Data register
*/
static int mv88e6xxx_g2_irl_wait(struct mv88e6xxx_chip *chip)
{
int bit = __bf_shf(MV88E6XXX_G2_IRL_CMD_BUSY);
return mv88e6xxx_g2_wait_bit(chip, MV88E6XXX_G2_IRL_CMD, bit, 0);
}
static int mv88e6xxx_g2_irl_op(struct mv88e6xxx_chip *chip, u16 op, int port,
int res, int reg)
{
int err;
err = mv88e6xxx_g2_write(chip, MV88E6XXX_G2_IRL_CMD,
MV88E6XXX_G2_IRL_CMD_BUSY | op | (port << 8) |
(res << 5) | reg);
if (err)
return err;
return mv88e6xxx_g2_irl_wait(chip);
}
int mv88e6352_g2_irl_init_all(struct mv88e6xxx_chip *chip, int port)
{
return mv88e6xxx_g2_irl_op(chip, MV88E6352_G2_IRL_CMD_OP_INIT_ALL, port,
0, 0);
}
int mv88e6390_g2_irl_init_all(struct mv88e6xxx_chip *chip, int port)
{
return mv88e6xxx_g2_irl_op(chip, MV88E6390_G2_IRL_CMD_OP_INIT_ALL, port,
0, 0);
}
/* Offset 0x0B: Cross-chip Port VLAN (Addr) Register
* Offset 0x0C: Cross-chip Port VLAN Data Register
*/
static int mv88e6xxx_g2_pvt_op_wait(struct mv88e6xxx_chip *chip)
{
int bit = __bf_shf(MV88E6XXX_G2_PVT_ADDR_BUSY);
return mv88e6xxx_g2_wait_bit(chip, MV88E6XXX_G2_PVT_ADDR, bit, 0);
}
static int mv88e6xxx_g2_pvt_op(struct mv88e6xxx_chip *chip, int src_dev,
int src_port, u16 op)
{
int err;
/* 9-bit Cross-chip PVT pointer: with MV88E6XXX_G2_MISC_5_BIT_PORT
* cleared, source device is 5-bit, source port is 4-bit.
*/
op |= MV88E6XXX_G2_PVT_ADDR_BUSY;
op |= (src_dev & 0x1f) << 4;
op |= (src_port & 0xf);
err = mv88e6xxx_g2_write(chip, MV88E6XXX_G2_PVT_ADDR, op);
if (err)
return err;
return mv88e6xxx_g2_pvt_op_wait(chip);
}
int mv88e6xxx_g2_pvt_write(struct mv88e6xxx_chip *chip, int src_dev,
int src_port, u16 data)
{
int err;
err = mv88e6xxx_g2_pvt_op_wait(chip);
if (err)
return err;
err = mv88e6xxx_g2_write(chip, MV88E6XXX_G2_PVT_DATA, data);
if (err)
return err;
return mv88e6xxx_g2_pvt_op(chip, src_dev, src_port,
MV88E6XXX_G2_PVT_ADDR_OP_WRITE_PVLAN);
}
/* Offset 0x0D: Switch MAC/WoL/WoF register */
static int mv88e6xxx_g2_switch_mac_write(struct mv88e6xxx_chip *chip,
unsigned int pointer, u8 data)
{
u16 val = (pointer << 8) | data;
return mv88e6xxx_g2_write(chip, MV88E6XXX_G2_SWITCH_MAC,
MV88E6XXX_G2_SWITCH_MAC_UPDATE | val);
}
int mv88e6xxx_g2_set_switch_mac(struct mv88e6xxx_chip *chip, u8 *addr)
{
int i, err;
for (i = 0; i < 6; i++) {
err = mv88e6xxx_g2_switch_mac_write(chip, i, addr[i]);
if (err)
break;
}
return err;
}
/* Offset 0x0E: ATU Statistics */
int mv88e6xxx_g2_atu_stats_set(struct mv88e6xxx_chip *chip, u16 kind, u16 bin)
{
return mv88e6xxx_g2_write(chip, MV88E6XXX_G2_ATU_STATS,
kind | bin);
}
int mv88e6xxx_g2_atu_stats_get(struct mv88e6xxx_chip *chip, u16 *stats)
{
return mv88e6xxx_g2_read(chip, MV88E6XXX_G2_ATU_STATS, stats);
}
/* Offset 0x0F: Priority Override Table */
static int mv88e6xxx_g2_pot_write(struct mv88e6xxx_chip *chip, int pointer,
u8 data)
{
u16 val = (pointer << 8) | (data & 0x7);
return mv88e6xxx_g2_write(chip, MV88E6XXX_G2_PRIO_OVERRIDE,
MV88E6XXX_G2_PRIO_OVERRIDE_UPDATE | val);
}
int mv88e6xxx_g2_pot_clear(struct mv88e6xxx_chip *chip)
{
int i, err;
/* Clear all sixteen possible Priority Override entries */
for (i = 0; i < 16; i++) {
err = mv88e6xxx_g2_pot_write(chip, i, 0);
if (err)
break;
}
return err;
}
/* Offset 0x14: EEPROM Command
* Offset 0x15: EEPROM Data (for 16-bit data access)
* Offset 0x15: EEPROM Addr (for 8-bit data access)
*/
static int mv88e6xxx_g2_eeprom_wait(struct mv88e6xxx_chip *chip)
{
int bit = __bf_shf(MV88E6XXX_G2_EEPROM_CMD_BUSY);
int err;
err = mv88e6xxx_g2_wait_bit(chip, MV88E6XXX_G2_EEPROM_CMD, bit, 0);
if (err)
return err;
bit = __bf_shf(MV88E6XXX_G2_EEPROM_CMD_RUNNING);
return mv88e6xxx_g2_wait_bit(chip, MV88E6XXX_G2_EEPROM_CMD, bit, 0);
}
static int mv88e6xxx_g2_eeprom_cmd(struct mv88e6xxx_chip *chip, u16 cmd)
{
int err;
err = mv88e6xxx_g2_write(chip, MV88E6XXX_G2_EEPROM_CMD,
MV88E6XXX_G2_EEPROM_CMD_BUSY | cmd);
if (err)
return err;
return mv88e6xxx_g2_eeprom_wait(chip);
}
static int mv88e6xxx_g2_eeprom_read8(struct mv88e6xxx_chip *chip,
u16 addr, u8 *data)
{
u16 cmd = MV88E6XXX_G2_EEPROM_CMD_OP_READ;
int err;
err = mv88e6xxx_g2_eeprom_wait(chip);
if (err)
return err;
err = mv88e6xxx_g2_write(chip, MV88E6390_G2_EEPROM_ADDR, addr);
if (err)
return err;
err = mv88e6xxx_g2_eeprom_cmd(chip, cmd);
if (err)
return err;
err = mv88e6xxx_g2_read(chip, MV88E6XXX_G2_EEPROM_CMD, &cmd);
if (err)
return err;
*data = cmd & 0xff;
return 0;
}
static int mv88e6xxx_g2_eeprom_write8(struct mv88e6xxx_chip *chip,
u16 addr, u8 data)
{
u16 cmd = MV88E6XXX_G2_EEPROM_CMD_OP_WRITE |
MV88E6XXX_G2_EEPROM_CMD_WRITE_EN;
int err;
err = mv88e6xxx_g2_eeprom_wait(chip);
if (err)
return err;
err = mv88e6xxx_g2_write(chip, MV88E6390_G2_EEPROM_ADDR, addr);
if (err)
return err;
return mv88e6xxx_g2_eeprom_cmd(chip, cmd | data);
}
static int mv88e6xxx_g2_eeprom_read16(struct mv88e6xxx_chip *chip,
u8 addr, u16 *data)
{
u16 cmd = MV88E6XXX_G2_EEPROM_CMD_OP_READ | addr;
int err;
err = mv88e6xxx_g2_eeprom_wait(chip);
if (err)
return err;
err = mv88e6xxx_g2_eeprom_cmd(chip, cmd);
if (err)
return err;
return mv88e6xxx_g2_read(chip, MV88E6352_G2_EEPROM_DATA, data);
}
static int mv88e6xxx_g2_eeprom_write16(struct mv88e6xxx_chip *chip,
u8 addr, u16 data)
{
u16 cmd = MV88E6XXX_G2_EEPROM_CMD_OP_WRITE | addr;
int err;
err = mv88e6xxx_g2_eeprom_wait(chip);
if (err)
return err;
err = mv88e6xxx_g2_write(chip, MV88E6352_G2_EEPROM_DATA, data);
if (err)
return err;
return mv88e6xxx_g2_eeprom_cmd(chip, cmd);
}
int mv88e6xxx_g2_get_eeprom8(struct mv88e6xxx_chip *chip,
struct ethtool_eeprom *eeprom, u8 *data)
{
unsigned int offset = eeprom->offset;
unsigned int len = eeprom->len;
int err;
eeprom->len = 0;
while (len) {
err = mv88e6xxx_g2_eeprom_read8(chip, offset, data);
if (err)
return err;
eeprom->len++;
offset++;
data++;
len--;
}
return 0;
}
int mv88e6xxx_g2_set_eeprom8(struct mv88e6xxx_chip *chip,
struct ethtool_eeprom *eeprom, u8 *data)
{
unsigned int offset = eeprom->offset;
unsigned int len = eeprom->len;
int err;
eeprom->len = 0;
while (len) {
err = mv88e6xxx_g2_eeprom_write8(chip, offset, *data);
if (err)
return err;
eeprom->len++;
offset++;
data++;
len--;
}
return 0;
}
int mv88e6xxx_g2_get_eeprom16(struct mv88e6xxx_chip *chip,
struct ethtool_eeprom *eeprom, u8 *data)
{
unsigned int offset = eeprom->offset;
unsigned int len = eeprom->len;
u16 val;
int err;
eeprom->len = 0;
if (offset & 1) {
err = mv88e6xxx_g2_eeprom_read16(chip, offset >> 1, &val);
if (err)
return err;
*data++ = (val >> 8) & 0xff;
offset++;
len--;
eeprom->len++;
}
while (len >= 2) {
err = mv88e6xxx_g2_eeprom_read16(chip, offset >> 1, &val);
if (err)
return err;
*data++ = val & 0xff;
*data++ = (val >> 8) & 0xff;
offset += 2;
len -= 2;
eeprom->len += 2;
}
if (len) {
err = mv88e6xxx_g2_eeprom_read16(chip, offset >> 1, &val);
if (err)
return err;
*data++ = val & 0xff;
offset++;
len--;
eeprom->len++;
}
return 0;
}
int mv88e6xxx_g2_set_eeprom16(struct mv88e6xxx_chip *chip,
struct ethtool_eeprom *eeprom, u8 *data)
{
unsigned int offset = eeprom->offset;
unsigned int len = eeprom->len;
u16 val;
int err;
/* Ensure the RO WriteEn bit is set */
err = mv88e6xxx_g2_read(chip, MV88E6XXX_G2_EEPROM_CMD, &val);
if (err)
return err;
if (!(val & MV88E6XXX_G2_EEPROM_CMD_WRITE_EN))
return -EROFS;
eeprom->len = 0;
if (offset & 1) {
err = mv88e6xxx_g2_eeprom_read16(chip, offset >> 1, &val);
if (err)
return err;
val = (*data++ << 8) | (val & 0xff);
err = mv88e6xxx_g2_eeprom_write16(chip, offset >> 1, val);
if (err)
return err;
offset++;
len--;
eeprom->len++;
}
while (len >= 2) {
val = *data++;
val |= *data++ << 8;
err = mv88e6xxx_g2_eeprom_write16(chip, offset >> 1, val);
if (err)
return err;
offset += 2;
len -= 2;
eeprom->len += 2;
}
if (len) {
err = mv88e6xxx_g2_eeprom_read16(chip, offset >> 1, &val);
if (err)
return err;
val = (val & 0xff00) | *data++;
err = mv88e6xxx_g2_eeprom_write16(chip, offset >> 1, val);
if (err)
return err;
offset++;
len--;
eeprom->len++;
}
return 0;
}
/* Offset 0x18: SMI PHY Command Register
* Offset 0x19: SMI PHY Data Register
*/
static int mv88e6xxx_g2_smi_phy_wait(struct mv88e6xxx_chip *chip)
{
int bit = __bf_shf(MV88E6XXX_G2_SMI_PHY_CMD_BUSY);
return mv88e6xxx_g2_wait_bit(chip, MV88E6XXX_G2_SMI_PHY_CMD, bit, 0);
}
static int mv88e6xxx_g2_smi_phy_cmd(struct mv88e6xxx_chip *chip, u16 cmd)
{
int err;
err = mv88e6xxx_g2_write(chip, MV88E6XXX_G2_SMI_PHY_CMD,
MV88E6XXX_G2_SMI_PHY_CMD_BUSY | cmd);
if (err)
return err;
return mv88e6xxx_g2_smi_phy_wait(chip);
}
static int mv88e6xxx_g2_smi_phy_access(struct mv88e6xxx_chip *chip,
bool external, bool c45, u16 op, int dev,
int reg)
{
u16 cmd = op;
if (external)
cmd |= MV88E6390_G2_SMI_PHY_CMD_FUNC_EXTERNAL;
else
cmd |= MV88E6390_G2_SMI_PHY_CMD_FUNC_INTERNAL; /* empty mask */
if (c45)
cmd |= MV88E6XXX_G2_SMI_PHY_CMD_MODE_45; /* empty mask */
else
cmd |= MV88E6XXX_G2_SMI_PHY_CMD_MODE_22;
dev <<= __bf_shf(MV88E6XXX_G2_SMI_PHY_CMD_DEV_ADDR_MASK);
cmd |= dev & MV88E6XXX_G2_SMI_PHY_CMD_DEV_ADDR_MASK;
cmd |= reg & MV88E6XXX_G2_SMI_PHY_CMD_REG_ADDR_MASK;
return mv88e6xxx_g2_smi_phy_cmd(chip, cmd);
}
static int mv88e6xxx_g2_smi_phy_access_c22(struct mv88e6xxx_chip *chip,
bool external, u16 op, int dev,
int reg)
{
return mv88e6xxx_g2_smi_phy_access(chip, external, false, op, dev, reg);
}
/* IEEE 802.3 Clause 22 Read Data Register */
static int mv88e6xxx_g2_smi_phy_read_data_c22(struct mv88e6xxx_chip *chip,
bool external, int dev, int reg,
u16 *data)
{
u16 op = MV88E6XXX_G2_SMI_PHY_CMD_OP_22_READ_DATA;
int err;
err = mv88e6xxx_g2_smi_phy_wait(chip);
if (err)
return err;
err = mv88e6xxx_g2_smi_phy_access_c22(chip, external, op, dev, reg);
if (err)
return err;
return mv88e6xxx_g2_read(chip, MV88E6XXX_G2_SMI_PHY_DATA, data);
}
/* IEEE 802.3 Clause 22 Write Data Register */
static int mv88e6xxx_g2_smi_phy_write_data_c22(struct mv88e6xxx_chip *chip,
bool external, int dev, int reg,
u16 data)
{
u16 op = MV88E6XXX_G2_SMI_PHY_CMD_OP_22_WRITE_DATA;
int err;
err = mv88e6xxx_g2_smi_phy_wait(chip);
if (err)
return err;
err = mv88e6xxx_g2_write(chip, MV88E6XXX_G2_SMI_PHY_DATA, data);
if (err)
return err;
return mv88e6xxx_g2_smi_phy_access_c22(chip, external, op, dev, reg);
}
static int mv88e6xxx_g2_smi_phy_access_c45(struct mv88e6xxx_chip *chip,
bool external, u16 op, int port,
int dev)
{
return mv88e6xxx_g2_smi_phy_access(chip, external, true, op, port, dev);
}
/* IEEE 802.3 Clause 45 Write Address Register */
static int mv88e6xxx_g2_smi_phy_write_addr_c45(struct mv88e6xxx_chip *chip,
bool external, int port, int dev,
int addr)
{
u16 op = MV88E6XXX_G2_SMI_PHY_CMD_OP_45_WRITE_ADDR;
int err;
err = mv88e6xxx_g2_smi_phy_wait(chip);
if (err)
return err;
err = mv88e6xxx_g2_write(chip, MV88E6XXX_G2_SMI_PHY_DATA, addr);
if (err)
return err;
return mv88e6xxx_g2_smi_phy_access_c45(chip, external, op, port, dev);
}
/* IEEE 802.3 Clause 45 Read Data Register */
static int mv88e6xxx_g2_smi_phy_read_data_c45(struct mv88e6xxx_chip *chip,
bool external, int port, int dev,
u16 *data)
{
u16 op = MV88E6XXX_G2_SMI_PHY_CMD_OP_45_READ_DATA;
int err;
err = mv88e6xxx_g2_smi_phy_access_c45(chip, external, op, port, dev);
if (err)
return err;
return mv88e6xxx_g2_read(chip, MV88E6XXX_G2_SMI_PHY_DATA, data);
}
static int mv88e6xxx_g2_smi_phy_read_c45(struct mv88e6xxx_chip *chip,
bool external, int port, int reg,
u16 *data)
{
int dev = (reg >> 16) & 0x1f;
int addr = reg & 0xffff;
int err;
err = mv88e6xxx_g2_smi_phy_write_addr_c45(chip, external, port, dev,
addr);
if (err)
return err;
return mv88e6xxx_g2_smi_phy_read_data_c45(chip, external, port, dev,
data);
}
/* IEEE 802.3 Clause 45 Write Data Register */
static int mv88e6xxx_g2_smi_phy_write_data_c45(struct mv88e6xxx_chip *chip,
bool external, int port, int dev,
u16 data)
{
u16 op = MV88E6XXX_G2_SMI_PHY_CMD_OP_45_WRITE_DATA;
int err;
err = mv88e6xxx_g2_write(chip, MV88E6XXX_G2_SMI_PHY_DATA, data);
if (err)
return err;
return mv88e6xxx_g2_smi_phy_access_c45(chip, external, op, port, dev);
}
static int mv88e6xxx_g2_smi_phy_write_c45(struct mv88e6xxx_chip *chip,
bool external, int port, int reg,
u16 data)
{
int dev = (reg >> 16) & 0x1f;
int addr = reg & 0xffff;
int err;
err = mv88e6xxx_g2_smi_phy_write_addr_c45(chip, external, port, dev,
addr);
if (err)
return err;
return mv88e6xxx_g2_smi_phy_write_data_c45(chip, external, port, dev,
data);
}
int mv88e6xxx_g2_smi_phy_read(struct mv88e6xxx_chip *chip, struct mii_bus *bus,
int addr, int reg, u16 *val)
{
struct mv88e6xxx_mdio_bus *mdio_bus = bus->priv;
bool external = mdio_bus->external;
if (reg & MII_ADDR_C45)
return mv88e6xxx_g2_smi_phy_read_c45(chip, external, addr, reg,
val);
return mv88e6xxx_g2_smi_phy_read_data_c22(chip, external, addr, reg,
val);
}
int mv88e6xxx_g2_smi_phy_write(struct mv88e6xxx_chip *chip, struct mii_bus *bus,
int addr, int reg, u16 val)
{
struct mv88e6xxx_mdio_bus *mdio_bus = bus->priv;
bool external = mdio_bus->external;
if (reg & MII_ADDR_C45)
return mv88e6xxx_g2_smi_phy_write_c45(chip, external, addr, reg,
val);
return mv88e6xxx_g2_smi_phy_write_data_c22(chip, external, addr, reg,
val);
}
/* Offset 0x1B: Watchdog Control */
static int mv88e6097_watchdog_action(struct mv88e6xxx_chip *chip, int irq)
{
u16 reg;
mv88e6xxx_g2_read(chip, MV88E6352_G2_WDOG_CTL, ®);
dev_info(chip->dev, "Watchdog event: 0x%04x", reg);
return IRQ_HANDLED;
}
static void mv88e6097_watchdog_free(struct mv88e6xxx_chip *chip)
{
u16 reg;
mv88e6xxx_g2_read(chip, MV88E6352_G2_WDOG_CTL, ®);
reg &= ~(MV88E6352_G2_WDOG_CTL_EGRESS_ENABLE |
MV88E6352_G2_WDOG_CTL_QC_ENABLE);
mv88e6xxx_g2_write(chip, MV88E6352_G2_WDOG_CTL, reg);
}
static int mv88e6097_watchdog_setup(struct mv88e6xxx_chip *chip)
{
return mv88e6xxx_g2_write(chip, MV88E6352_G2_WDOG_CTL,
MV88E6352_G2_WDOG_CTL_EGRESS_ENABLE |
MV88E6352_G2_WDOG_CTL_QC_ENABLE |
MV88E6352_G2_WDOG_CTL_SWRESET);
}
const struct mv88e6xxx_irq_ops mv88e6097_watchdog_ops = {
.irq_action = mv88e6097_watchdog_action,
.irq_setup = mv88e6097_watchdog_setup,
.irq_free = mv88e6097_watchdog_free,
};
static void mv88e6250_watchdog_free(struct mv88e6xxx_chip *chip)
{
u16 reg;
mv88e6xxx_g2_read(chip, MV88E6250_G2_WDOG_CTL, ®);
reg &= ~(MV88E6250_G2_WDOG_CTL_EGRESS_ENABLE |
MV88E6250_G2_WDOG_CTL_QC_ENABLE);
mv88e6xxx_g2_write(chip, MV88E6250_G2_WDOG_CTL, reg);
}
static int mv88e6250_watchdog_setup(struct mv88e6xxx_chip *chip)
{
return mv88e6xxx_g2_write(chip, MV88E6250_G2_WDOG_CTL,
MV88E6250_G2_WDOG_CTL_EGRESS_ENABLE |
MV88E6250_G2_WDOG_CTL_QC_ENABLE |
MV88E6250_G2_WDOG_CTL_SWRESET);
}
const struct mv88e6xxx_irq_ops mv88e6250_watchdog_ops = {
.irq_action = mv88e6097_watchdog_action,
.irq_setup = mv88e6250_watchdog_setup,
.irq_free = mv88e6250_watchdog_free,
};
static int mv88e6390_watchdog_setup(struct mv88e6xxx_chip *chip)
{
return mv88e6xxx_g2_write(chip, MV88E6390_G2_WDOG_CTL,
MV88E6390_G2_WDOG_CTL_UPDATE |
MV88E6390_G2_WDOG_CTL_PTR_INT_ENABLE |
MV88E6390_G2_WDOG_CTL_CUT_THROUGH |
MV88E6390_G2_WDOG_CTL_QUEUE_CONTROLLER |
MV88E6390_G2_WDOG_CTL_EGRESS |
MV88E6390_G2_WDOG_CTL_FORCE_IRQ);
}
static int mv88e6390_watchdog_action(struct mv88e6xxx_chip *chip, int irq)
{
u16 reg;
mv88e6xxx_g2_write(chip, MV88E6390_G2_WDOG_CTL,
MV88E6390_G2_WDOG_CTL_PTR_EVENT);
mv88e6xxx_g2_read(chip, MV88E6390_G2_WDOG_CTL, ®);
dev_info(chip->dev, "Watchdog event: 0x%04x",
reg & MV88E6390_G2_WDOG_CTL_DATA_MASK);
mv88e6xxx_g2_write(chip, MV88E6390_G2_WDOG_CTL,
MV88E6390_G2_WDOG_CTL_PTR_HISTORY);
mv88e6xxx_g2_read(chip, MV88E6390_G2_WDOG_CTL, ®);
dev_info(chip->dev, "Watchdog history: 0x%04x",
reg & MV88E6390_G2_WDOG_CTL_DATA_MASK);
/* Trigger a software reset to try to recover the switch */
if (chip->info->ops->reset)
chip->info->ops->reset(chip);
mv88e6390_watchdog_setup(chip);
return IRQ_HANDLED;
}
static void mv88e6390_watchdog_free(struct mv88e6xxx_chip *chip)
{
mv88e6xxx_g2_write(chip, MV88E6390_G2_WDOG_CTL,
MV88E6390_G2_WDOG_CTL_UPDATE |
MV88E6390_G2_WDOG_CTL_PTR_INT_ENABLE);
}
const struct mv88e6xxx_irq_ops mv88e6390_watchdog_ops = {
.irq_action = mv88e6390_watchdog_action,
.irq_setup = mv88e6390_watchdog_setup,
.irq_free = mv88e6390_watchdog_free,
};
static irqreturn_t mv88e6xxx_g2_watchdog_thread_fn(int irq, void *dev_id)
{
struct mv88e6xxx_chip *chip = dev_id;
irqreturn_t ret = IRQ_NONE;
mv88e6xxx_reg_lock(chip);
if (chip->info->ops->watchdog_ops->irq_action)
ret = chip->info->ops->watchdog_ops->irq_action(chip, irq);
mv88e6xxx_reg_unlock(chip);
return ret;
}
static void mv88e6xxx_g2_watchdog_free(struct mv88e6xxx_chip *chip)
{
mv88e6xxx_reg_lock(chip);
if (chip->info->ops->watchdog_ops->irq_free)
chip->info->ops->watchdog_ops->irq_free(chip);
mv88e6xxx_reg_unlock(chip);
free_irq(chip->watchdog_irq, chip);
irq_dispose_mapping(chip->watchdog_irq);
}
static int mv88e6xxx_g2_watchdog_setup(struct mv88e6xxx_chip *chip)
{
int err;
chip->watchdog_irq = irq_find_mapping(chip->g2_irq.domain,
MV88E6XXX_G2_INT_SOURCE_WATCHDOG);
if (chip->watchdog_irq < 0)
return chip->watchdog_irq;
snprintf(chip->watchdog_irq_name, sizeof(chip->watchdog_irq_name),
"mv88e6xxx-%s-watchdog", dev_name(chip->dev));
err = request_threaded_irq(chip->watchdog_irq, NULL,
mv88e6xxx_g2_watchdog_thread_fn,
IRQF_ONESHOT | IRQF_TRIGGER_FALLING,
chip->watchdog_irq_name, chip);
if (err)
return err;
mv88e6xxx_reg_lock(chip);
if (chip->info->ops->watchdog_ops->irq_setup)
err = chip->info->ops->watchdog_ops->irq_setup(chip);
mv88e6xxx_reg_unlock(chip);
return err;
}
/* Offset 0x1D: Misc Register */
static int mv88e6xxx_g2_misc_5_bit_port(struct mv88e6xxx_chip *chip,
bool port_5_bit)
{
u16 val;
int err;
err = mv88e6xxx_g2_read(chip, MV88E6XXX_G2_MISC, &val);
if (err)
return err;
if (port_5_bit)
val |= MV88E6XXX_G2_MISC_5_BIT_PORT;
else
val &= ~MV88E6XXX_G2_MISC_5_BIT_PORT;
return mv88e6xxx_g2_write(chip, MV88E6XXX_G2_MISC, val);
}
int mv88e6xxx_g2_misc_4_bit_port(struct mv88e6xxx_chip *chip)
{
return mv88e6xxx_g2_misc_5_bit_port(chip, false);
}
static void mv88e6xxx_g2_irq_mask(struct irq_data *d)
{
struct mv88e6xxx_chip *chip = irq_data_get_irq_chip_data(d);
unsigned int n = d->hwirq;
chip->g2_irq.masked |= (1 << n);
}
static void mv88e6xxx_g2_irq_unmask(struct irq_data *d)
{
struct mv88e6xxx_chip *chip = irq_data_get_irq_chip_data(d);
unsigned int n = d->hwirq;
chip->g2_irq.masked &= ~(1 << n);
}
static irqreturn_t mv88e6xxx_g2_irq_thread_fn(int irq, void *dev_id)
{
struct mv88e6xxx_chip *chip = dev_id;
unsigned int nhandled = 0;
unsigned int sub_irq;
unsigned int n;
int err;
u16 reg;
mv88e6xxx_reg_lock(chip);
err = mv88e6xxx_g2_int_source(chip, ®);
mv88e6xxx_reg_unlock(chip);
if (err)
goto out;
for (n = 0; n < 16; ++n) {
if (reg & (1 << n)) {
sub_irq = irq_find_mapping(chip->g2_irq.domain, n);
handle_nested_irq(sub_irq);
++nhandled;
}
}
out:
return (nhandled > 0 ? IRQ_HANDLED : IRQ_NONE);
}
static void mv88e6xxx_g2_irq_bus_lock(struct irq_data *d)
{
struct mv88e6xxx_chip *chip = irq_data_get_irq_chip_data(d);
mv88e6xxx_reg_lock(chip);
}
static void mv88e6xxx_g2_irq_bus_sync_unlock(struct irq_data *d)
{
struct mv88e6xxx_chip *chip = irq_data_get_irq_chip_data(d);
int err;
err = mv88e6xxx_g2_int_mask(chip, ~chip->g2_irq.masked);
if (err)
dev_err(chip->dev, "failed to mask interrupts\n");
mv88e6xxx_reg_unlock(chip);
}
static const struct irq_chip mv88e6xxx_g2_irq_chip = {
.name = "mv88e6xxx-g2",
.irq_mask = mv88e6xxx_g2_irq_mask,
.irq_unmask = mv88e6xxx_g2_irq_unmask,
.irq_bus_lock = mv88e6xxx_g2_irq_bus_lock,
.irq_bus_sync_unlock = mv88e6xxx_g2_irq_bus_sync_unlock,
};
static int mv88e6xxx_g2_irq_domain_map(struct irq_domain *d,
unsigned int irq,
irq_hw_number_t hwirq)
{
struct mv88e6xxx_chip *chip = d->host_data;
irq_set_chip_data(irq, d->host_data);
irq_set_chip_and_handler(irq, &chip->g2_irq.chip, handle_level_irq);
irq_set_noprobe(irq);
return 0;
}
static const struct irq_domain_ops mv88e6xxx_g2_irq_domain_ops = {
.map = mv88e6xxx_g2_irq_domain_map,
.xlate = irq_domain_xlate_twocell,
};
void mv88e6xxx_g2_irq_free(struct mv88e6xxx_chip *chip)
{
int irq, virq;
mv88e6xxx_g2_watchdog_free(chip);
free_irq(chip->device_irq, chip);
irq_dispose_mapping(chip->device_irq);
for (irq = 0; irq < 16; irq++) {
virq = irq_find_mapping(chip->g2_irq.domain, irq);
irq_dispose_mapping(virq);
}
irq_domain_remove(chip->g2_irq.domain);
}
int mv88e6xxx_g2_irq_setup(struct mv88e6xxx_chip *chip)
{
int err, irq, virq;
chip->g2_irq.masked = ~0;
mv88e6xxx_reg_lock(chip);
err = mv88e6xxx_g2_int_mask(chip, ~chip->g2_irq.masked);
mv88e6xxx_reg_unlock(chip);
if (err)
return err;
chip->g2_irq.domain = irq_domain_add_simple(
chip->dev->of_node, 16, 0, &mv88e6xxx_g2_irq_domain_ops, chip);
if (!chip->g2_irq.domain)
return -ENOMEM;
for (irq = 0; irq < 16; irq++)
irq_create_mapping(chip->g2_irq.domain, irq);
chip->g2_irq.chip = mv88e6xxx_g2_irq_chip;
chip->device_irq = irq_find_mapping(chip->g1_irq.domain,
MV88E6XXX_G1_STS_IRQ_DEVICE);
if (chip->device_irq < 0) {
err = chip->device_irq;
goto out;
}
snprintf(chip->device_irq_name, sizeof(chip->device_irq_name),
"mv88e6xxx-%s-g2", dev_name(chip->dev));
err = request_threaded_irq(chip->device_irq, NULL,
mv88e6xxx_g2_irq_thread_fn,
IRQF_ONESHOT, chip->device_irq_name, chip);
if (err)
goto out;
return mv88e6xxx_g2_watchdog_setup(chip);
out:
for (irq = 0; irq < 16; irq++) {
virq = irq_find_mapping(chip->g2_irq.domain, irq);
irq_dispose_mapping(virq);
}
irq_domain_remove(chip->g2_irq.domain);
return err;
}
int mv88e6xxx_g2_irq_mdio_setup(struct mv88e6xxx_chip *chip,
struct mii_bus *bus)
{
int phy, irq, err, err_phy;
for (phy = 0; phy < chip->info->num_internal_phys; phy++) {
irq = irq_find_mapping(chip->g2_irq.domain, phy);
if (irq < 0) {
err = irq;
goto out;
}
bus->irq[chip->info->phy_base_addr + phy] = irq;
}
return 0;
out:
err_phy = phy;
for (phy = 0; phy < err_phy; phy++)
irq_dispose_mapping(bus->irq[phy]);
return err;
}
void mv88e6xxx_g2_irq_mdio_free(struct mv88e6xxx_chip *chip,
struct mii_bus *bus)
{
int phy;
for (phy = 0; phy < chip->info->num_internal_phys; phy++)
irq_dispose_mapping(bus->irq[phy]);
}
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